Noun (plural). A particularly obnoxious group of people who generally are despised by another person or group, such as in-laws by a husband or wife. A contraction of "shit on" as their behavior is woefully destructive.

Dad was out watering the lawn when he saw the Buick Roadmaster stationwagon round the corner with Aunt Midge at the wheel, bellowing at her brood of brats in back, who were engaged in some kind of wrestling match.

To shit on people,.. usually it is when you know you are greater, better, and smarter than those who are successful than you... 10/10 people will agree that those in a better position than you don't deserve to be there.. you are not one to judge.. but still.. what the fuck?? anyway... it is when you go and get yours.. and shit on those who think they are better than you.. or don't mind you cause they think they are the shit... there is light at the end of the tunnel.. you will shit on everyone...